PCIe adapters supporting long distance 10GB fiber?

Denys Fedoryshchenko denys at visp.net.lb
Tue Jun 20 16:09:38 CST 2017


I guess it depends on NIC, there is many spinoffs of Intel X520 with 
much weaker power supply circuitry.
It might work with good NIC, but you can't rely on it on long term, 
IMHO. Even 40km Finisar SFP+ has Pdiss 1.5W. Also they mention: "The 
typical power consumption of the FTLX1672D3BTL may exceed the limit of 
1.5W specified for the Power Level II transceivers"
If we talk about 80km, Pdiss is 1.8W.
While 10GBASE-LR is <1W

On 2017-06-20 16:30, Max Tulyev wrote:
> We use Intel NICs with SFP+ holes. It works good with long and short
> range SFP+ modules, including CWDM/DWDM.
> 
> On 15.06.17 12:10, chiel wrote:
>> Hello,
>> 
>> We are deploying more and more server based routers (based on BSD). We
>> have now come to the point where we need to have 10GB uplinks one 
>> these
>> devices and I prefer to plug in a long range 10GB fiber straight into
>> the server without it going first into a router/switch from vendor x. 
>> It
>> seems to me that all the 10GB PCIe cards only support either copper
>> 10GBASE-T, short range 10GBASE-SR or the 10 Km 10GBASE-LR (but only 
>> very
>> few). Are there any PCIe cards that support 10GBASE-ER and 10GBASE-ZR? 
>> I
>> can't seem to find any.
>> 
>> Chiel
>> 


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